NBV02_Schleifen

(c) 2025 Technische Hochschule Augsburg - Fakultät für Informatik - Prof.Dr.Nik Klever - Impressum

Schleifen

a = ["a","b","c","d"]

for schleifenvariable in a:
    print(schleifenvariable)

a
b
c
d

a = [[1,2,3],["a","b","c"],[0x1,0xa,0xf]]

for var in a:
    print(var)

[1, 2, 3]
['a', 'b', 'c']
[1, 10, 15]

for var in a:
    b = var * 3
    print(b)

[1, 2, 3, 1, 2, 3, 1, 2, 3]
['a', 'b', 'c', 'a', 'b', 'c', 'a', 'b', 'c']
[1, 10, 15, 1, 10, 15, 1, 10, 15]

i = 0
for var in a:
    print(i,var)
    i = i + 1

0 [1, 2, 3]
1 ['a', 'b', 'c']
2 [1, 10, 15]

i = 0
for var in a:
    print(i,var)
i = i + 1

0 [1, 2, 3]
0 ['a', 'b', 'c']
0 [1, 10, 15]

i

1

while

i = 3
while i < 10:
    i = i + 1
    print(i)

4
5
6
7
8
9
10

range

for i in range(10):
    print(i)

0
1
2
3
4
5
6
7
8
9

for i in range(5,20,2):
    print(i)

5
7
9
11
13
15
17
19

break

for i in range(10):
    if i == 5:
        break
    print(i)

0
1
2
3
4

continue

for i in range(10):
    if i == 5:
        continue
    print(i)

0
1
2
3
4
6
7
8
9

Gauss'sche Summenformel

erg = 0
for i in range(1,51):
    erg += i
print(erg)

1275

(50+1)*50/2

1275.0

else

n = 20
for i in range(n):
    if i == 15:
        break
    print(i)
else:
    print("fertig")

0
1
2
3
4
5
6
7
8
9
10
11
12
13
14

n = 10
for i in range(n):
    if i == 15:
        break
    print(i)
else:
    print("fertig")

0
1
2
3
4
5
6
7
8
9
fertig

pass

if i < 20:
    print("i < 20")
else:
    pass

i < 20

i

9

i = 30

if i < 20:
    print("i < 20")
else:
    pass

unendliche Schleife

while True:
    pass

---------------------------------------------------------------------------
KeyboardInterrupt                         Traceback (most recent call last)
<ipython-input-22-cccdd40a5a4c> in <module>()
      1 while True:
----> 2     pass

KeyboardInterrupt: